# Dissimortuum

*Medium* *Undead* *Chaotic Evil*

- **Armor Class:** 15 (natural armor)
- **Hit Points:** 112 (15d8 + 45)
- **Speed:** walk 30 ft.
- **Challenge Rating:** 7 (2,900 XP)
- **Source:** Tome of Beasts 2023, page 106

| STR | DEX | CON | INT | WIS | CHA |
| --- | --- | --- | --- | --- | --- |
| 14 (+2) | 10 (+0) | 16 (+3) | 8 (-1) | 11 (+0) | 18 (+4) |

- **Saving Throws**: Con +6
- **Skills:** 
- **Damage Vulnerabilities:** False
- **Damage Immunities:** necrotic, poison
- **Damage Resistances:** bludgeoning, piercing, and slashing from nonmagical attacks
- **Condition Immunities:** charmed, exhaustion, poisoned
- **Senses:** darkvision 60 ft., passive Perception 10
- **Languages:** the languages of its creator

### Special Abilities

- **Spider Climb:** The dissimortuum can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
- **Undead Nature:** The dissimortuum doesn't require air, food, drink, or sleep.

### Actions

- **Multiattack:** The dissimortuum makes three Claw attacks. It can replace one Claw attack with a use of Terrifying Mask.
- **Claw:** Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 15 (3d8 + 2) slashing damage.
- **Terrifying Mask:** Each non-Undead creature within 60 feet of the dissimortuum that can see it must succeed on a DC 15 Wisdom saving throw or be frightened for 1 minute. A frightened creature can repeat the saving throw, ending the effect on itself on a success. If a target's saving throw is successful or the effect ends for it, the target becomes immune to the dissimortuum's Terrifying Mask for the next 24 hours.